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Патент USA US2112348

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March 29, 1938.
P. RUTTEN
2,112,348
ROOF FOR sILos‘ AND THE LIKE
Filed June 10, 1957
2 Sheets-Sheet l
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17
279
25
A ZZQrn/eys
March 29, 1938.
p_ RUTTEN
2,112,348
ROOF FOR SILOS AND THE LIKE
Filed June 10, 1957
2 Sheets-Sheet 2
Ifzvenior “
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AiZorw/eyf
Patented Mar. 29, 1938
2,112,348
UNITED STATES PATENT OFFICE
2,112,348‘
ROOF FOR SILOS AND THE LIKE
Peter Rutten, Osakis, Minn.
Application June 10, 1937, Serial'No. 147,468
8 Claims. (Cl. 108-32)
This invention relates to roof structures for
silos and the like wherein the roof is generally connected sections with said sections pushed to
gether to the limit of their movement in one
of dome-shape and made up of a plurality of direction;
/
interconnected sector shaped sections.
Fig. 5 is a plan view of a single roof section;
In erecting structures, such as silos, one of the
Fig. 6 is a more or less diagrammatic side ele
principal problems which has been encountered
vation
of one of said roof sections showing the
is that of properly ?tting the roof to the upper
curvature which gives the dome-shape to the
edge of the silo wall. This is due mainly to two }
things. One is that silos are generally measured‘
10 by their interior diameter and due to the indi
vidual characteristics‘ of various types of wall
structures, their thickness and therefore the out
side diameters of several types of silos will be
materially different and in no way standardized.
15 Another reason which makes the building of a
silo roof dii?cult is the fact that almost invariably
the wall structure is out of round and a rela
tively ?exible roof construction must be used. ‘
It is, therefore, one of the objects of my in
20 vention to provide a roof structure for silos and
the like which can be,readily assembled upon a
silo of odd outside diameter and irregular shape.
It is a further object of my invention to pro
vide means for adjustably connecting the sector
25 shaped elements which make up the roof by pro
viding for limited relative movement in the joints
connecting said sections.
'
A still further object is to provide a novel type
of joint structure and auxiliary connection be
roof;
Fig. 7 is a vertical section taken on the line 1-1
of Fig. 6;
‘ Fig. 8 is a similar section taken at the lower
end of a roof sector on the line 8——8 of Fig. 6;
Fig. 9 is a slightly enlarged fragmentary view
showing the interconnected upper corners of a
pair of adjacent roof sections;
Fig. 10 is an enlarged vertical section through
the upper portion of a roof section and the lower
portion of the roof cap;
'
,
_
Fig. lliis a sectional view through portions of
adjacent roof sections and the connector strip
used to interlock the last two sections joined in Ni
constructing a roof;
Fig. 12 is a fragmentary perspective of said
connector strip;
Fig. 13 is an enlarged fragmentary plan view of
portions of adjacent sections joined by the con
nector strip; and
,
‘
Fig. 14 is an enlarged vertical section through
portions of the silo wall, a roof section and the
30 tween adjacent sections, whereby the greatest
element connecting said section to the wall.
amount of relative movement between sections is
the embodiment of my invention shown in
at that point where the roof sections are‘con— theIndrawings,
the roof is made up of a plurality
nected to the silo walls and there is substantially of sector-shaped sections l5 which are bent in
no relative movement at theupper ends of said an arcuate shape, as shown in Fig. 6, and pref
sections where they connect with the roof cap. erably provided with corrugations. The corru
This latter feature permits the use of standard gations shown throughout the views have right
sizes of roof caps, regardless of the adjustment angled bends but, of course, any type of corru
necessary where the sections are connected to gation could be used. Due to the shape of the
the silo wall.
'
roof sections, I have tapered the corrugations so
These and other objects and advantages of the that they widen from the top to the bottom of
invention will more fully appear from the follow
each section. This tapering is shown best in Fig.
ing description made in connection with the ac
5 and also in Figs. 7 and 8, the latter two ?gures
companying drawings, wherein like reference being cross sections of the upper and lower por
characters refer to the same or similar parts tions of a section. The corrugated panel is not
‘throughout the views, and in which:
an absolute necessity but materially strengthens
Fig. 1 is an elevation of approximately one
the
roof structure and is highly desirable in a
quarter of a fully erected roof;
roof of this kind where no supporting framework
Fig. 2 is a fragmentary vertical section through need
be used.
the structure shown in Fig. 1;
The side edges of each roof section are bent
Fig. 3 is a sectional view taken transversely of
upon themselves, as best shown in Figs. 3, 4, 7
a roof section with 4 portions of adjacent sec
tions extended to the limit of their movement
away from each other;
Fig. 4 is a sectional view taken transversely of
a complete roof section and portions of adjacent
15
and 8. These bent over portions include an up
standing wall IG, a relatively horizontal wall I‘!
which is bent back over the body of the roof sec
tion, and a downwardly turned tongue I 8 which
is the extreme edge of the metal making up one
9,119,348
of the sections. It will be noted that the down
wardly turned tongue I8 is spaced from the main
portion of the roof section and it is preferred that
this space he just sumcient to permit the sliding
When this amount of movement in a single joint
between adjacent sections is multiplied by the
number of joints in the entire roof structure, it
of a part of an adjoining roof section beneath it.
The opposite side of the roof section is bent in
expansion or contraction is provided. ‘
will be seen that quite a considerable degree of
exactly the same manner as the left-hand side
It is not necessary to have this provision for
lateral adjustment around the roof at the top of
which has just been discussed, except that this
the sections nor is it desirable.
bent or rolled over edge on the right-hand side
10 is below the main surface of the roof section
while that on the left-hand side is bent over
above the roof section. It, of course, makes no
difference whether the bent edge is on the top or
bottom of the roof section except that the edges
15 of each section are bent oppositely to one an
other, with the further provision, however, that
all sections of the roof be formed in the same
manner.
'
The above described bent over edges are adapt
20 ed to be interlocked by sliding one bent over edge
into the edge of the adjacent section, this being
done advantageously by starting the bottom edge
of a section to be added into the upper portion
of the previously connected section and sliding
the first mentioned section downwardly until it
is in the correct position in interlocking engage
ment with the section to which it is joined. It
will be noted that these bent over edges are of
the same cross sectional size and shape through
out the entire length of the sections. This is
brought out by comparing the bent over edges in
Figs. 7 and 8. This interconnection of the edges
of adjacent sections is continued successively
until all the roof sections are in place.
However, when the final section has been joined
to the section just preceding it in the assembling
operation, it will be found that the free edge of
the last section cannot be joined to the first sec
tion to be placed in the same manner as the other
sections were joined, that is by sliding inter
connection of the bent over edges of the last two
to be joined. For that reason a connector ele
ment, indicated generally by the letter C is pro
vided. The structure is best shown in Fig. 12
45 and includes a central vertical portion is which
has the oppositely extending horizontal areas 20
and 2! which extend from the top and bottom of
the portion I 9, respectively. The areas 20 and
2! can be considered to correspond with those
To the contrary.
it is preferable that the opening defined by the top
edges of the roof sections be maintained rela
tively constant. If this is the case, a roof cap 26
of a standard size can be used to cover the roof
opening. I have, therefore, provided means for
connecting the interconnected upper corners of
adjacent roof sections with some sort of con
nector, such as a bolt 21 which extends through
said adjacent upper corners, as best shown in
Figs. 9 and 10. A nut is provided to anchor said
bolt and is indicated by the numeral 28. As shown
in Fig. 10, this bolt extends also through the lower
portion of the cap 26, thereby securing said cap
and roof sections ?rmly together.
The lower edge of the roof may be secured to
the silo wall by any suitable means. In Fig. 14,
I have shown a strap 29 which has an offset lower 25
portion provided with a slot 30 which is adapted
to receive a hook-like bolt 3i which has threaded
on its elongated end a nut 32. The hook-shaped
portion of the bolt is adapted to engage a hoop
33, such as is generally used to bind’ the wall 30
panels of silo structures. The bracket 29 is shown
secured by a bolt 34 to the lower portion of each
roof section.
. From the foregoing, it will be seen that I have
provided a roof structure for silos made‘up of 35
arcuate interconnecting sector shaped elements
which may be pro-formed at the factory and need
not be made to any particular size for the indi
vidual silo to be roofed. In addition to the fact
that the above described bent over interconnect 40
ing edges of said sections permit adjustment of
the roof to various diameters, the particular way
in which I have formed these bent over edges,
provides a ?nished roof structure which is un
usually strong, said interconnecting edges provid
ing sui?cient strength that no supporting frame
work or ribs need be used to strengthen the roof.
This is a feature which not only lessens the cost
of the structure but also greatly simpli?es its
erection, and since it is contemplated that struc 50
tures
of this type be erected not only by skilled
with the turned over edges of the roof sections.
It, therefore, follows that the outer vertical Walls labor but by the individual purchaser. ease of
22 and inwardly turned horizontal areas 23 with erection is an important factor. It should be
the tongues 2‘ correspond with the portions 16. noted also that the roof sections are connected
and secured by a minimum of bolts. Only one is
55 I1 and I8 of the bent over edges of the roof sec
tion. Therefore, this final connecting strip C can used at the top corners of adjacent sections, and
be used to interconnect the adjacent edges of the the bottom of each section is secured by only one
bolt. This feature is of importance because of
last roof section to be formed, and the ?rst roof >
the reduction in material costs and also because
section which was put in place.
60
When all of the sections have been connected it greatly lessens the labor required in erection. 60
It should be understood that the chute dormer
in the manner above described, the lower edge
of the assembled roof is adapted to overlie the may be built in one of the roof sections so that
upper edge of the silo wall 25, as shown in Fig. 14. it in no way interferes with the general mode of
If the roof is found to be too large for the outer erecting the roof.
It will, of course, be understood that various
diameter of the silo wall so that a relatively close
fit is not obtained, the size of the roof at its changes may be made in the form, details, ar
rangement and proportions of the various parts
lower edge may be reduced by pushing the sec
tions together, this adjustment is made possible without departing from the scope of my inven
by the construction of the interconnected bent tion.
What is claimed is:
edges of the roof sections since the tongues i8
70
1. In a roof structure for silos and the like, a
of said bent over edges are adapted to be moved
portions of adjacent roof sections which connect
laterally within definite limits determined by the
distance between a co-operating tongue iii of an
adjoining section and the oppositely disposed
75 vertical portion i6 of said adjoining section.
plurality of arcuate sector-shaped sections whose
non-parallel edges are bent upon themselves and
adapted to interlock with the edges of adjacent
sections in a manner permitting limited move 75
3
2,112,343
ment between said sections, and a connector for
forming the ?nal joint between the last two adja
cent edges to be connected comprising an ele
ment having parallel edges bent upon themselves
extreme edges positioned normally to the main
surfaces of the sections and spaced therefrom,
whereby the edges of adjacent sections are
adapted to interengage to hold said sections to
and adapted to engage the edges of said last men
gether.
tioned adjacent sections. ,
6. In a dome-shaped roof structure for silos
and the like, a plurality of longitudinally arcuate
sector-shaped sections, the longitudinal edge por
tions of said sections being bent to a substan
2. In a roof structure for silos and the like, a
plurality of sector-shaped sections having radial
corrugations, the edges of said sections being bent
10 upon themselves and adapted to interlock with
tially‘ rectangular cross-sectional shape on the 10
similarly bent edges of adjacent sections, said
corrugations being spaced suf?ciently from said
upper sides of said sections with their extreme
bent edges to permit limited lateral shifting move
ment between adjacent sections, and a connector
surfaces of the sections and spaced therefrom a
adapted to interlock with the adjacent edges of
the last two of said sections to be joined.
~r v
3. In a roof structure for silos and the like, a
plurality of arcuate sector-shaped sections hav
ing radial corrugations, the edges of said sections
20 being bent upon themselves and adapted to slid
ably interlock with similarly bent edges of ad
jacent sections, a connector adapted to interlock
with the adjacent edges of the last two edges to
be joined, means for substantially rigidly con
necting the upper corners of adjacent sections,
and a common connector and anchoring means
secured to the lower ends of said sections.
4. In a roof structure for silos and the like, a
plurality of sector-shaped sections adapted to
30 form a dome-like roof, the edges of said sections
being bent upon themselves and adapted to inter
lock with limited lateral shifting movement with
oppositely bent edges of adjacent sections, a cen
tral roof cap adapted to overlie the top edges of
35 said sections, bolts extending through said roof
cap and the overlapping upper corners of adjacent
interlocking sections, and a connector ring se
cured at spaced points to the lower portions of
said‘ sections.
5. In a dome-shaped roof structure for silos
40
and the like, a plurality of longitudinally arcuate
sector-shaped sections, the longitudinal edge por
tions of said sections being bent to a substantial
ly rectangular cross-sectional shape with their
5
edge portions positioned normally to the main
distance substantially equal to the thickness of
the material forming said sections, whereby said 15
edges can be slidably inter-engaged with simi
larly bent edges on the under sides of said sec
tions, the vertical sides of said rectangular por
tions being spaced apart a distance substantially
greater than the thickness of said sections to 20
provide for limited lateral shifting movement be
tween adjacent lnter-engaged sections.
7. In a dome-shaped roof structure for silos
and the like, a'plurality of longitudinally arcuate
sector-shaped sections, the arcuate edge portions 25
of said sections being bent at right angles to the
main surfaces of the sections and then bent in
wardly parallel to said sections, and then toward
said sections to points spaced from the main sur
faces of said sections, the bent edges of one sec
tion being slidable in an arcuate curve into inter
30'
locking engagement with similarly shaped, oppo
sitely bent edges of adjacent sections.
'
8. The structure in claim 7, and means for con
necting the adjacent edges of the last two sec 35
tions to be, joined comprising an arcuate strip
having a vertical central wall and portions ex
tending laterally from said central wall at oppo
site sides thereof, said extending portions being
formed similarly to the edge portions of said 40
sector-shaped sections and in opposite relation to
each other.
PETER RU'I'I'EN.
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